초록

Transmission Control Protocol (TCP) is the dominating end-to-end transport layer protocol which provides secure and reliable data transfer together with some other protocols in the protocol stack. Its performance is good in wired networks where packet losses are due to congestion. If standard TCP is applied on wireless networks its performance degrades. In this paper performance of the Newreno and Sack1 have been analyzed through simulation for wireless topology and then the new solution called Sack2 has been proposed and tested through simulations. Results from the simulation show that Sack2 is more stable and consistent than others. Its link utilization is also more efficient than the other protocols.